Plaster bed



Dec. 11, 1934. J. s. RAYNOR 1,983,994

PLASTER BED Fled July 9. 1951 2 Sheets-Sheet 1 JM 5 12a/32901" J. $7. RAYNOR Dec. 11, 1934.

PLASTER BED Filed/July 9, 1951 2 Sheets-Sheet 2 v I IV-ENTOR.

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ATTORNEY.

Patented Dec. 11, 1934 Y'EH STAT ESL PATENT OFFICE PLASTER BED John- S.. Raynor; Holmesburg, Pa.

Application July 9, 1931', Serial No. 549,651'

6: Claimsl.. y(01; 72,-124) invention.` relates. to-v newvl andA useful improvementsy in a plaster bed,. such as isl often known as lath-.or plaster keyand oneof the objectsfof. theinventioI-risl to dispose a. key element 5i.- oven asheetor.v block of. material, said key eleprefer. to. use a.l sheet-of relatively. stiff. material,

suchas straw-board, card-board or..` plaster-board and-,thelike over one. or both faces of Whichis.

disposed. sections or. areasiof.A a foraminousmaterial which preferably has. suicient inherent stiiness to hold. said. section` of. mater-ialand.y the load of applied plaster by bending.- the edges of the section orsecticns. ofA foral-minous. material4 oven the edges of. thesheet. materal and against the'I Opposite Aface of thelatter.

While I have nameda number of the foraminouskey'for-ming.elementsit is; to be understood that any equivalents: mayr be utilized, such as punched paper stock-.fW-ith.. orV Without concaved or convexedcuppedportions, Weldedpr .Woven wiring... expanded metal, Wovenfabric, vegetable matter formed intofrough surfac.ed...keys,- sheet steelpunchedfashioned. orformedinto any suitable congurationnrkey element design. or combinationsof wires andmaterial. of vegetable base imcpmbinaticn Witheachv.other,v such as straight orwoyenwire,andburlap-or matting. p

11n-,actual experiments that. I. have so. far made, I.v have foundit possible to. use ordinaryy poultry wire'expandedmetal, `Welded Wire, woven. Wire, knitted Wire, Sttchedfwire., riveted wire, slotted Wire,` punched or perforated sheets of metal. or paper, stock,.sheet..st.ee1-With cupped-up portions, sheetsof combinedmetal andvegetablesor other ccmpositematerials, pressed. compositiony sheets, knitted or. Woven vegetablemattersuch as burlap netting and screening,r matting formed, from` sea Weeds; sorv long.,V as` the material hasA inherent. strength to supportY itself, andA alcad ofV applied plasteringr over itsy entire. area. when. attached only by its. edgestothe edgesof the supporting sheet.. and providing the formation. or configurationV issuchthat itv offersagrip-.to permit plaster toxbercunded over,l cuppedx into-wedged into, or laidt over, por-tionsv thereof. until the applied plaster becomes stiff or has. progressed. to some extent into the hardening state.

Another.- objvectuof, my invention istoprovide a plaster bed consist-ing,V of a supportingsheet of fairly; stiff material and a section offkey element. also of. stiff: materiali disposed' across one face ofv the supporting sheet and having the edges thereof bentover the edges of the supports` ingsheet andengaging the opposite face thereof.

Afurther object of the invention. is to provide a plaster bed consistingl of a sheet ofv material, a keyelement disposedacrossone face ofthe suppcrting sheet andbent over the edges thereof. so. as to contact with.. the opposite face. and.- means.- for securing the bent over or turned over edges of. t-he-v keyy element' to the-supporting sheet.

A still. further object of theinventionistoprvde for supporting intermediate parts of the keyl element.

With-these.. and other ends in view, this invenv tion; consists` in. the detailsK of. construction and combination `of elements hereinafter set forth and then. specically designated by the claims.y

In:order that those skilledin the-v artto which. this invention appertains may understand how-to make and. use. the same, Il willdescribe its con.-A struction@ in detail, referringby numerals tothe accompanying drawings forminga partof this. application, iIL-Whichp-f Y Fig. 1 isafragmentary perspective Viewv of a plaster bed embodying my invention.

Fig- 2. is anenlargedfragmentary sectionalview showing-.onemanner of bracing or anchoringfthe key elementwithin the-body thereof. or at distances from. the edges.

Fig. Sis asimilarview. showing another method of bracing or anchoring. the key element and. illustrating another form ofV key. element.

Fig. ei. isa further enlargedfragmentary sectional vieW along a line such as 4.--1 of Fig. 1, showing onemethod of attaching the plaster bed tofasuppcrt, such, as` a stud, or rafter.y

Fig. 5 is a similar View as thoughtaken. atthe line. 5..-5..of Fig. 1.v

Fig. 6is also a similary View. as though. taken-4 at the line 6,-6 of Fig. 1. v Y

Fig. 7. is. a perspective view of a plaster. bed embodying the simplest form of my invention looking toward the obverse face vof the support,- ing.-s heet over Which the main body of the key. element is disposed.

Fig. 8 .isafragmentary reverse face-view there,- of on aV slightly reducedscale.

Fig. 9 is a perspective View of a section of another. form of the invention.

In. carrying out my invention as. herein embodied,.l0 represents a supporting sheet such as plaster-board, card-board or stiff paper overI one face of which. is disposed a section of key element.11preferably Wire-fabric or other foramincusmetallic structure, although .equivalents and substitutes can be utilized, examples of which have been herein before set forth. The edges of the key element are turned, bent or formed over the edges of the supporting sheet to produce gripping flanges or rims 12. The main body portion of the key element is sufficiently slack to permit applied plaster to pass through the key element and occupy the space between said key element and the contiguous face of the supporting sheet. This not only makes a positive key for the plaster but has the additional advantage of causing said key element to be entirely covered by or embedded in the plaster to prevent the deteriorating action of the elements thereon.

In some instances, especially where the supporting sheet is of exceedingly large area, it is advisable to further support the key element, brace or anchor the same on the support sheet and therefor staples 13 may be driven directly through the key element and the supporting sheetand the ends clinched. In the case of wire fabrics, such as poultry wire or window screening, the staples straddle a strand of the fabric, but in the case of perforated material the legs of each staple will pass through adjacent perforations and in some material the legs of the staple may make their own apertures as they are driven through the key element and the supporting sheet.

The key element can also be braced by a Wire 14 disposed on the outside of the body of said key element and running either longitudinally or crosswise of the complete structure with the ends bent over opposite edges of the structure as indicated at 15 so that the terminals of said wire are disposed against the reverse face of the structure and if found desirable, the wire 14 may be further fastened in position by staples 16 which are the same as the staples`13 but straddle the wire 14.

Wherever staples are used to secure the wire in place, the ends of the wire need not be bent around the edges of the structure and I have therefore shown a wire at 17 held in place by staples 18.

It is also possible to dispose a wire or wires 19 over the reverse face of the supporting sheet as shown in Fig. 2, and then drive the staples 20 through the key element and the supporting sheet so that the legs of the staples will be on opposite sides of the wire 19 and the ends of the staple legs then clinched or bent over, and if found desirable, the pointed ends of the staple legs may be embedded into the supporting sheet.

In addition, wires 21 and 22 may be disposed over both the obverse and reverse faces of the structure in parallelism and staples 23 then positioned so as to straddle both of the wires and the sharpened ends of the legs are clinched or bent over as shown in Fig. 3.

In assembling, installing or erecting the plaster bed, the same is disposed over or across the face of the studs, joists, rafters or other supporting devices 24 and nails 25 driven through the structure into the supporting devices and the heads of the nails bent over so as to grip any of the wires 14, 17 and 22 disposed over the obverse face of the structure as shown in Figs. 4 and 5 or over a portion of the key element as illustrated in Fig. 6. Where the nail is driven through the plaster bed in the region of an end of the wire 14, it will assume a position similar to that illustrated in Fig. 4, but where the nail passes through a central body part of the device, it will have the appearance of Fig. 5, whereas if the nail is driven through the device near the edge then only the two parts of the key element on opposite faces of the supporting sheet will be in the region of the nail as shown in Fig. 6. Of course, any other method of fastening the bed in place can be utilized.

Where some material other than metal is used as the key element, as when using burlap, matting or woven textile or purely vegetable fabrics or paper which is intended to be illustrated in Fig. 9, and designated by the numeral 26, the edges of said key element 26 is carried around or disposed over the edges of thesupporting sheet 10 so as to lap over the reverse face of the supporting sheet and then sewn, pasted or otherwise fixed in position and at suitable intervals within the main body area said key element may also be stitched, pasted or otherwise connected with or to the supporting sheet.

When the plaster bed units are assembled or a plaster bed unit covering a certain area can be manufactured and delivered more cheaply than wood lath to cover the same area and the plaster can be applied evenly and in a relatively thinner mass due to the solid backing of the supporting sheet and since the applied plaster will tend to adhere to the supporting sheet, it is unnecessary to provide the excess plaster which ordinarily passes between wood or metal lath thereby saving considerable material.

Of course, I do not Wish to be limited to the exact details of construction herein shown and described as these may be varied within the limits of the appended claims without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful is:

1. A plaster bed comprising a rigid imperforate member, and a meshed member slightly larger than the imperforate member and imposed on one face thereof and having all its margins turned over the edges of said imperforate member to secure the two members together.

2. A plaster bed consisting of a supporting member, a key element disposed over the entire surface of one face of said supporting member and having its margins turned back over all of the edges of said supporting member, and means to attach the key element to the supporting member intermediate the edges thereof.

3. A plaster bed consisting of a supporting member, a key element disposed over the entire surface of one face of said supporting member and having its margins turned back over all of the edges of said supporting member, and staples projecting through the key element and supporting member to attach the former to the latter intermediate the edges thereof.

4. A plaster bed consisting of a supporting member, a key element disposed over the entire surface of one face of said supporting member and having its margins turned back over all of the edges of said supporting member, straight sections of wire disposed across the key element, and staples straddling said wire and projecting through said key element and the supporting member to fasten the parts together intermediate the edges of the supporting member.

5. A plaster bed consisting of a supporting member, a key element disposed over the entire surface of one face of said supporting member and having its margins turned back over al1 of the edges of said supporting member, straight sections of wire disposed across the face of the 5 supporting member opposite the face over which the main part of the key element is disposed, and staples projecting through said key element and the supporting member andclinched about the and having its margins turned back over al1 of the edges of said supporting member, straight sections of wire disposed across the key element, other straight sections of Wire disposed across the face of the supporting member opposite that over which the main portion of the ke;7 element is disposed, and in juxtaposition to the first mentioned wire sections, and staples projecting through the key element and supporting member and straddling corresponding opposite Wire sections, said staples engaging the wire sections to fasten the parts together.

JOHN S. RAYNOR. 

